What's that slimy stuff on the bottom of the lake? Golden brown algae

Crusty brown algae mats growing in pristine Michigan lakes

Torch Lake blues turn brown; Torch Lake Protection Alliance seeks water chemistry, brown algae analysis, Local News

Green Stuff in the Water - Prairie Rivers of Iowa

Brown slime, what is it and how don't get rid of it

Stay out of Lake Windermere, says council after experts warn fish are choking to death

Beware Lake Swimmers In Connecticut/NY, The Algae Blooms Loom

Sargassum: Seaweed or Brown Algae – Thompson Earth Systems Institute

Monitors warn: Blue-green algae in Lake Okeechobee is on the move

What is Algae, Algae Explained

With golden brown algae, searching for answers leads to more questions

Headed to a lake or river today? Look out for blooming harmful algae! - Washington State Department of Ecology

Toxic algae are filling Colorado lakes with slimy pea-green soup. Are hotter summers making it worse? - The Colorado Sun

Red, Green and Brown: What's in the Water?